E-M5 and X-Pro 1: DR and Noise comparison

I was using E-M5 during the last 10 days and trying to access its performance comparing to my beloved Fuji X-Pro 1 which has already proved to be a gem in IQ and high iso. So what I did was taking pictures of a fairy dark closet using 45mm f1.8 on Oly and 60mm f2.4 on Pro 1 at the same f-stop (f2.8), same iso (3200) and at very close shutter speed (Oly 1/20s, Fuji 1/18 second). Although Oly received less light but its images were about 1/3 stop brighter and more contrast (I used auto dr on Fuji, and auto gradation on Oly). So I did increase exposure of Oly image and increased contrast in Fuji image. This didn't alter noise and DR but making images more comparable.

Fuji X-Pro 1

OM-D E-M5

Here are my personal opinions from these 2 pics:

1. Color is more accurate on Fuji but on a warm side with a tinge of green and yellow on Oly.
2. Fuji has a more pleasant noise with a film-like appearance.
3. Fuji has less artifacts from noise reduction.

4. Although it may appear that Oly has a tiny edge in detail rendering in some places but this may due to characters of the lenses at particular f-stop.

5. I cannot see clarity that normally seen from Pro 1 due to no-AA filter. This may due to a poorly lit subject.
6. Fuji has better highlight roll-off (more gradual)

7. But all in all, these two images seem to be damn close. Although, I gave slight edge to Fuji but some may like Oly's image more. I was surprised that images from 4/3 sensor format can be this close to those of the very best APC-S camera. Now, I can leave home with only E-M5 in my bag and of course with it superb assortment of lenses.

Ok, I also tried to take many pictures from these 2 cameras without tripod to see how E-M5's Ibis can mitigate its smaller sensor in this particular circumstance. From more than 20 pictures taken, it seems I can select 2500-3200 iso from Oly taken at f2.8 but had to negate to use iso 12,800 on Fuji at the same f-stop to get decently sharp pictures. So the IBIS gives Oly around 2 stops advantage over Fuji and Oly's images from iso 3200 is significantly better than Fuji at iso 12,800.